autocompile -> auto-compile

autocompile -> auto-compile

* NEWS:
* check-guile.in:
* doc/guile.1:
* doc/ref/scheme-scripts.texi:
* libguile/init.c:
* libguile/load.c:
* libguile/load.h:
* libguile/script.c:
* module/Makefile.am:
* module/ice-9/boot-9.scm:
* module/scripts/compile.scm:
* module/system/base/compile.scm:
* test-suite/Makefile.am:
* test-suite/tests/popen.test: Change "autocompile" to "auto-compile" or
  "auto_compile", as appropriate, in variable names, function names,
  command line arguments, and the documentation.